diff options
| author | Curt Wohlgemuth <[email protected]> | 2011-10-26 04:38:59 -0400 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2011-10-26 04:38:59 -0400 |
| commit | 6f8ff537266ee5396c920fb0c842a21df3055ff3 (patch) | |
| tree | a024979a4e8f718289e9bf36fc165b96b68d6209 /tools/perf/scripts/python/sctop.py | |
| parent | f85b287a01237857a50c93868231f7e831581a27 (diff) | |
ext4: handle NULL p_ext in ext4_ext_next_allocated_block()
In ext4_ext_next_allocated_block(), the path[depth] might
have a p_ext that is NULL -- see ext4_ext_binsearch(). In
such a case, dereferencing it will crash the machine.
This patch checks for p_ext == NULL in
ext4_ext_next_allocated_block() before dereferencinging it.
Tested using a hand-crafted an inode with eh_entries == 0 in
an extent block, verified that running FIEMAP on it crashes
without this patch, works fine with it.
Signed-off-by: Curt Wohlgemuth <[email protected]>
Signed-off-by: "Theodore Ts'o" <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions